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Authors
Fang, Changchun https://orcid.org/0000-0003-0844-4987
Iceland, John
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Funding
Funding for this research was provided by:
The National Social Science Fund of China (16BSH086)
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Article History
Received: 15 May 2018
Accepted: 13 September 2018
First Online: 21 September 2018
Competing interests
: The authors declare that they have no competing interests.
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